Product summary
The 40×10×10 mm neodymium magnet is a small, high-energy NdFeB block intended for designs where space is limited but magnetic performance must be repeatable. Its rectangular form factor simplifies mechanical locating and allows predictable field orientation when used in arrays or assemblies.
This copy emphasizes fit-for-purpose details engineers care about: dimensions, magnetization options, coating and how the part behaves in real assemblies - not abstract marketing claims.
Specifications
- Material: Sintered NdFeB (Neodymium-Iron-Boron)
- Size: 40 × 10 × 10 mm (L × W × T)
- Typical grades: N35 / N42 / N48 / N52 (select per temperature and flux requirements)
- Magnetization: Axial standard; other orientations on request
- Coating: Ni–Cu–Ni (standard); epoxy or zinc on request for specific environments
- Dimensional tolerance: ±0.3–0.5 mm (specify tighter tolerance if required)
- Operating temperature: Standard grades ≈ ≤80 °C; high-temp variants available
Practical performance notes
Designers should treat this part as a predictable field source rather than a peak-pull marketing number. Expect consistent flux along the block face, stable batch-to-batch performance when a single grade is specified, and sensitivity to gap, surface finish and alignment. Small changes in gap or coating thickness materially affect coupling force.
Common uses
- Flux source in compact motors and rotor/stator assemblies
- Position and proximity sensing (Hall/encoder applications)
- Small actuators and magnetic latches in automation equipment
- Fixture elements and alignment keys in assembly jigs
Customization & procurement
Samples can be supplied for integration testing. For production runs, options include custom magnetization patterns, stricter tolerances for automated assembly, and alternative coatings for corrosive or high-wear environments. Provide CAD or drawings early to shorten lead time. Support for bulk orders and OEM packaging is available; lead times depend on grade and tolerance.
Handling & installation tips
Avoid mechanical shocks (NdFeB is brittle). Mask or note polarity during assembly to prevent field cancellation. Account for coating thickness in press-fits and mating clearances.
FAQ
Q: Can magnetization be changed?
A: Yes - axial is standard; custom orientations and multi-pole patterns are producible.
Q: Do coatings reduce field strength?
A: Coatings add negligible magnetic gap, but thicker or non-magnetic layers will slightly reduce coupling - specify if tight gaps are critical.
Q: Are small pilots available before large runs?
A: Yes - samples and test quantities are available prior to committing to bulk orders.
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